EUVD-2026-32900Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
3DescriptionCVE.org
An issue was discovered in Canonical Multipass for macOS before version 1.16.3 due to an incomplete fix for CVE-2025-5199. While the patch in version 1.16.0 updated the ownership of the multipassd daemon binary to root:wheel, five co-located binaries (multipass, qemu-img, qemu-system-aarch64, qemu-system-x86_64, and sshfs_server) in /Library/Application Support/com.canonical.multipass/bin/ retain ownership by the installing user and remain writable. Because the root LaunchDaemon (com.canonical.multipassd.plist) configures a PATH environment variable that prioritizes this user-writable directory and invokes these auxiliary binaries by their bare names, a local attacker can replace an auxiliary binary (such as qemu-img) with a malicious wrapper. When the root daemon subsequently triggers the binary during routine execution (e.g., via multipass launch), the malicious code executes with root privileges, leading to local privilege escalation.
AnalysisAI
Local privilege escalation in Canonical Multipass for macOS before 1.16.3 allows a low-privileged local user to obtain root execution by replacing co-located auxiliary binaries that the multipassd LaunchDaemon invokes via a user-writable PATH directory. The flaw is an incomplete remediation of CVE-2025-5199: while 1.16.0 corrected ownership of the multipassd binary itself, five sibling binaries (multipass, qemu-img, qemu-system-aarch64, qemu-system-x86_64, sshfs_server) were left owned by the installing user and writable, enabling binary planting. No public exploit identified at time of analysis, and the issue is not currently listed in CISA KEV.
Technical ContextAI
Multipass is Canonical's lightweight VM manager for macOS that ships a privileged LaunchDaemon (com.canonical.multipassd.plist) which manages QEMU-backed Ubuntu instances. The root daemon's plist defines a PATH environment that prioritizes /Library/Application Support/com.canonical.multipass/bin/ and invokes helper utilities (qemu-img, qemu-system-*, sshfs_server, multipass) by bare name rather than absolute path, so resolution of those names depends on directory contents and ownership. The root cause is CWE-276 (Incorrect Default Permissions): the installer left auxiliary executables owned and writable by the unprivileged installing user, so any code substituted at those paths is later loaded by a root-owned process - a classic write-where-root-reads trust boundary violation that the 1.16.0 fix only partially addressed by changing ownership of the daemon binary alone.
RemediationAI
Vendor-released patch: upgrade Canonical Multipass on macOS to version 1.16.3 or later, which is referenced as the fixed release in the GitHub Security Advisory at https://github.com/canonical/multipass/security/advisories/GHSA-r2xg-x32f-23c5. Until the upgrade is deployed, administrators can apply compensating controls by recursively changing ownership of /Library/Application Support/com.canonical.multipass/bin/ and its contents to root:wheel with mode 0755 so the installing user can no longer overwrite the auxiliary binaries (side effect: subsequent Multipass auto-updates or reinstalls performed under the user account may fail or revert permissions), and by unloading the LaunchDaemon with launchctl unload /Library/LaunchDaemons/com.canonical.multipassd.plist on systems where Multipass is not actively required (side effect: VM management via Multipass is disabled until reloaded). On multi-user macOS hosts, restrict interactive login to trusted accounts to reduce the local-attacker prerequisite.
Oracle Java SE JDK/JRE 7 and 6 Update 27 and earlier allows remote code execution with complete system compromise throug
In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it
GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which
Multiple vulnerabilities in Oracle Java 7 before Update 11 allow remote attackers to execute arbitrary code by (1) using
The (1) EPHEMERAL, (2) HTTPS, (3) MVG, (4) MSL, (5) TEXT, (6) SHOW, (7) WIN, and (8) PLT coders in ImageMagick before 6.
When running Apache Tomcat versions 9.0.0.M1 to 9.0.0, 8.5.0 to 8.5.22, 8.0.0.RC1 to 8.0.46 and 7.0.0 to 7.0.81 with HTT
Remote code execution is possible with Apache Tomcat before 6.0.48, 7.x before 7.0.73, 8.x before 8.0.39, 8.5.x before 8
GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values of
The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packe
Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by lev
Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 17 and earlier, and
Local privilege escalation in the GNU C Library (glibc) dynamic loader ld.so allows unprivileged local users on affected
Same weakness CWE-276 – Incorrect Default Permissions
View allSame technique Privilege Escalation
View allShare
External POC / Exploit Code
Leaving vuln.today